NFS Locking Failure and Updating

I have a general question about installing updates and wanted to get some advice from experts.

First: I have NFS Locking failures on shutdown. Is this a bid deal? Should I even worry about it?

Second: I have read and googled a lot about this problem and it seems that it is supposed to be fixed with nfs-utils-1.0.7-16. I have already updated my machine via yum update and apt-get update . When I do a yum search, I get:

Code:

[root@Mr-Burns ~]# yum search nfs-utils
Searching Packages:
Setting up repositories
updates-released 100% |=========================| 951 B 00:00
extras 100% |=========================| 1.1 kB 00:00
base 100% |=========================| 1.1 kB 00:00
Reading repository metadata in from local files
updates-re: ################################################## 941/941
Added 5 new packages, deleted 18 old in 8.44 seconds
nfs-utils.i386 1.0.7-8 base
Matched from:
nfs-utils
The nfs-utils package provides a daemon for the kernel NFS server and
related tools, which provides a much higher level of performance than the
traditional Linux NFS server used by most users.
This package also contains the showmount program. Showmount queries the
mount daemon on a remote host for information about the NFS (Network File
System) server on the remote host. For example, showmount can display the
clients which are mounted on that host.
nfs-utils-debuginfo.i386 1.0.7-11 updates-released
Matched from:
nfs-utils-debuginfo
Debug information for package nfs-utils
This package provides debug information for package nfs-utils.
Debug information is useful when developing applications that use this
package or when debugging this package.
nfs-utils.i386 1.0.7-11 updates-released
Matched from:
nfs-utils
The nfs-utils package provides a daemon for the kernel NFS server and
related tools, which provides a much higher level of performance than the
traditional Linux NFS server used by most users.
This package also contains the showmount program. Showmount queries the
mount daemon on a remote host for information about the NFS (Network File
System) server on the remote host. For example, showmount can display the
clients which are mounted on that host.
nfs-utils.i386 1.0.7-11 installed
Matched from:
nfs-utils
The nfs-utils package provides a daemon for the kernel NFS server and
related tools, providing a much higher level of performance than the
traditional Linux NFS server used by most users.
This package also contains the showmount program. Showmount queries
the mount daemon on a remote host for information about the NFS
(Network File System) server on the remote host.
[root@Mr-Burns ~]#

It appears that I only have 1.0.7-11 installed. How can I find out if this is the latest released version? If it is, should I try to install an unreleased 1.0.7-16 to fix my problem, or am I just asking for more headaches?

Finally: Can I just turn off NFS locking using a chkconfig command? What will happen if I just decide to not use NFS Locking?